Safety Rules 


for 


Gold Dreds res 


Issued by the 

Industrial Accident Commission 

of the 

State of California 


525 Market Street, San Francisco 
Union League Building, Los Angeles 


Effective January 1, 1919 


caJjIfornia state printing onricE 

SACRAifENTO 

1913 


89374 






















Safety Rules 


for 


Gold Dredg es 


Issued by the 

c Industrial Accident Commission 

of the 

State of California 


525 Market Street, San Francisco 
Union League Building, Los Angeles 


Effective January 1, 1919 


> j 

»> > 

CALIFORNIA STATE PRINTING OFFICE 


39374 


SACRAMENTO 
19 18 














-'Y'l 


INDUSTRIAL ACCIDENT COMMISSION 
OF THE STATE OF CALIFORNIA 

525 Market Street, San Francisco 

423 Union League Building, Los Angeles 


A. J. PILLSBURY. Chairman. 
WILL J. FRENCH. 

MEYER I.ISSNER. 

Commissioners. 

n. of P. 

i»i/\rt 3 1919 


r ° 7 

H. M. WOLFLIN, 5 • 

* tt, 

Chief Mine Inspector, Industrial Accident Commission, and 
Mining Engineer, U. S. Bureau of Mines. 


SAFETY RULES FOR GOLD DREDGES. 

PREFACE. 

Sections 51 to 72, inclusive, of the Workmen’s Compensa¬ 
tion, Insurance and Safety Act give the Industrial Accident 
Commission power to make and enforce safety orders, rules 
and regulations, to prescribe safety devices, to fix safety 
standards, and to order the reporting of accidents. 

The phrase “place of employment” is defined in such a way 
that gold dredging operations are included within the pro¬ 
visions of the act. It is stated that the terms “safe” and 
“safety” as applied to an employment or a place of employ¬ 
ment shall mean such freedom from danger to the life or 
safety of employees as the nature of the employment will 
reasonably permit, and that the terms “safety device” and 
“safeguard” shall be given a broad interpretation so as to 
include any practicable method of mitigating or preventing a 
specific danger. 

The Commission has power, after a hearing had upon its 
own motion or upon complaint, hy general or special orders, 
rules or regulations, or otherwise, “to fix such reasonable 
standards and to prescribe, modify, and enforce such reason¬ 
able orders for the adoption, installation, use, maintenance 
and operation of safety devices, safeguards and other means 
or methods of protection, to be as nearly uniform as possible, 
as may be necessary to carry out all laws and lawful orders 
relative to the protection of the life and safety of employees 
in employments and places of employment.” 

The Commission, carrying out its plan of obtaining the best 
practical ideas to incorporate in its Safety Rules, requested 


4 


Safety Rules for Gold Dredges. 


the following gentlemen, who represent various interests, to 
serve on a committee to draft Safety Rules for Gold Dredges: 

Committee on Safety Rules for Gold Dredges. 

Harold Mestre (Chairman), Consulting Engineer. 

E. L. Lowell (Secretary), Deputy Mine Inspector, Industrial 
Accident Commission. 

L. D. Hopfield, Department Manager Natomas Company of 
California. 

C. W. Gardner, Representing Hammon Engineering Company. 

A. L. Wilde, District Representative International Brother¬ 
hood of Steam Shovel and Dredge Men. 

Carl Brown, Manager California Casualty Indemnity Ex¬ 
change. 

R. L Eltringham, Electrical Engineer, Industrial Accident 
Commission. 

H. M.. Wolflin, Mining Engineer, U. S. Bureau of Mines, 
Chief Mine Inspector, Industrial Accident Commission. 

Application. 

These rules shall apply to all gold dredges operated in the 
State of California; provided, that in cases where, in the 
opinion of the Industrial Accident Commission, the enforce¬ 
ment of any rule would not materially increase the safety of 
employees, and would work undue hardship.on the operator, 
exemptions may be made at the discretion of said Commission, 
but such exemptions must be in writing to be effective, and 
can be revoked after reasonable notice is given in writing. 
Air Pressure Tank Safety Orders, and Orders 1104, 1105, 1106 
and 1107 of the General Construction Safety Orders pertaining 
to the control, storage and uses of explosives and fuse shall 
apply, where applicable to gold dredges. 


Industrial Accident Commission. 


5 


GENERAL SAFETY AND WELFARE. 

Rule 401. Designation for Service of Notices. 

(a) Person on Whom Notices Are To Be Served Shall Be 

Designated. 

Every operator of any gold dredge within the provisions of 
these rules shall, within ninety (90) days after the rules 
approved by the Commission become effective, file or cause to 
be filed, in the office of the chief mine inspector of the Com¬ 
mission a designation duly verified by such operator, appoint¬ 
ing a person on whom all notices, warnings, or processes 
required to be served under the provisions of these rules, may 
be served, and giving the office, place of employment, or place 
of business of such person, which must be within the state. 

(b) . Such Designation To Remain In Force Until Revoked. 

Such designation shall continue in force until revoked by 
the death or removal of the person so designated, or until 
revoked by an instrument in writing designating in like manner 
some other person upon whom such notices or processes may 
be served, or until the filing in such office of a written revoca¬ 
tion of said consent executed by the person so designated. If 
the person so designated dies, or files a revocation of his con¬ 
sent, the operator shall designate, within thirty days thereafter, 
in like manner some other person upon whom such notices or 
processes may be served within this state. 

(c) Service of Notices on Designated Person Deemed Service 

on Operator. 

Service of notices, warnings, or processes on such designated 
person shall, in all cases arising under these rules, be deemed 
service on the operator represented; provided further, that 
nothing herein contained shall be construed to prevent thd 
said operator in person, or by its officers or agents, if said 
2—39374 


6 


Safety Rules for Gold Dredges. 


operator be a corporation, or any employee of such operator, 
from being so designated. 

Rule 402. Reporting of Injuries. 

(a) Report of Fatal Injuries. 

Whenever a fatal injury occurs on or about any gold 
dredge, notice thereof shall be given promptly by telephone or 
telegraph if possible, to the chief mine inspector, by the super¬ 
intendent or other person having immediate charge of the 
work at the time of the accident. Upon receiving such notice 
the chief mine inspector or a deputy shall, if feasible and if 
the nature of the injury shows it to be necessary, proceed 
to the scene of the injury as early as possible and investi¬ 
gate fully the cause of the injury, and shall file the result 
of such investigation as a report in the office of the chief 
mine inspector. Whenever the chief mine inspector or a 
deputy can not proceed as above to the scene of the injury, 
the person in charge of the gold dredge shall be so informed, 
and such person in charge shall obtain signed statements, 
sworn to where practicable, of those who witnessed the 
injury, or if no one was present at the time of such injury he 
shall obtain the statements of those first arriving upon the 
scene. Such statements shall give, as far as possible, the 
details of the injury, the facts leading up to it, and its 
probable cause; such statements shall immediately thereafter 
be sent to the Industrial Accident Commission, which shall file 
the same in its office. A transcript of the evidence given at 
the coroner’s inquest may be sent in place of these statements, 
if the operator so desires. 

(b) Report of Personal Injury. 

Every personal injury occurring on or about a gold dredge 
shall be promptly reported to the man in charge of the dredge 
by the person injured, or, if such person shall be unable to do 
so by reason of the injury, then by some person acting in 



Industrial Accident Commission. 


7 


behalf of the injured person; and such injury shall be promptly 
reported to the superintendent’s office, where it shall be re¬ 
corded. These records shall at all times be open to examina¬ 
tion by the chief mine inspector or any deputy. 

Where the injury disables through the day of injury, or 
requires skilled medical attention, a written report must be 
made to the Industrial Accident Commission on the blank 
form furnished by the Commission. This report must be 
forwarded within thirty-five (35) days from the date of injury. 

Rule 403. Care of the Injured. 

(a) Telephones. 

A telephone shall be installed on or near every gold dredge 
in order to provide quick communication with a physician. 
Arrangements shall be made so that in case of an injury 
requiring medical treatment the physician shall be brought to 
the injured man or the injured man to medical aid as quickly 
as possible. 

(b) First Aid Equipment. 

It shall be the duty of operators, superintendents, or anyone 
in charge of any gold dredge or gold dredges to keep in the 
winch room or other approved location on each boat a 
stretcher, of a type approved by the Commission, a woolen 
blanket, a waterproof blanket, and such additional first aid 
materials as are designated in tables 1 and 2 or 1 and 3 which 
follows, in good condition for use in caring for any person who 
may be injured on or about the boat. Where satisfactory 
arrangements have been made for the prompt bringing of 
medical assistance to the injured man on the boat and there is 
more than one boat operated by the same company and the 
boats are operated in reasonably close proximity to each other, 
one stretcher of approved type centrally located and easily 
accessible to the attending physician may be supplied instead 
of the one stretcher on each boat, as above required. 


8 


Safety Rules for Gold Dredges. 


Table 1. Miscellaneous. 

1 blunt end eye dropper.* 

1 U. S. army tourniquet. 

1 small medicine glass. 

1 pair blunt end scissors. 

1 forceps suitable for extracting splinters, etc. 

2 doz. applicators for iodine, 
ij doz. paper drinking cups. 

1 teaspoon. 

Preparations: 

2 oz. tincture iodine i U. S. P. 

2 oz. 2% solution of boric acid.* 

2 oz. aromatic ammonia. 

1 doz. ampoules 1 c.c. aromatic ammonia. 

Table 2. 

10 yds. 1 in. gauze roller bandage. 

^ doz. triangular bandages. 

1 doz. small size bandage compresses (1 in. sq., tails i yd. 
long, center of compress being sewed to tails; folded 
upon itself about 20 times). 

1 doz. medium size bandage compresses {2h in. sq., tails 
1 yd. long; center of bandage compress sewed to tails; 
folded upon itself about 20 times). 

1 doz. large size bandage compresses (3i in. sq., folded 

upon itself 18 times, tails 2 yds. long, center of bandage 
compress being sewed to tails). 

2 one yard pkgs. picric acid gauze. (An equivalent quantity 

of gauze in smaller packages may be substituted for 1 
one yard package.) 
i doz. splints of assorted lengths. 

10 yds. 2 in. gauze roller bandage. 

*A 2-ounce antiseptic dropping bottle is suggested which is a com¬ 
bination of glass bottle and eye dropper. The eye dropper and stopper 
are combined, thus permitting the eye dropper to remain in the solution 
when the stopper is in place. 



Industrial Accident Commission. 


9 


Table 3. 

10 yds. 1 in. gauze roller bandage, 
i doz. 1 in x 10 yds. gauze. 

1 doz. 2 in. x 10 yds. gauze. 

2 compresses—U. S. A. style (large size). 

2 triangular bandages. 

10 yds. 2 in. gauze roller bandage. 

2 yds. plain gauze (6"x36"), handy-fold or equal. 

Plain gauze 1 yd.—2 packages. 

<j doz. Z.O. adhesive plaster, % inch x 5 yds. 
e doz. Z.O. adhesive plaster, 1 in. x 5 yds. 

8 oz. carron oil with 2% carbolic acid. This must be placed 
in four 2 oz. bottles sealed with paraffine or other suit¬ 
able material. Tubes of solidified carron oil may be 
substituted for 2 oz. of the above liquid preparation. 
Substitutes for the above materials may be permitted by the 
Industrial Accident Commission on request. 

(c) First Aid Training. 

The superintendent shall see that at least one man on each 
shift on each dredge is thoroughly trained in first aid. For 
the purposes of these rules, men shall be considered to be 
thoroughly trained when they are able to administer first aid 
treatment for shock, bleeding, burns, cuts, bruises, sprains, 
fractures, and dislocations; they shall be able to administer 
artificial respiration by the prone pressure (or Schaefer) 
method and understand the proper methods of transporting 
the injured. 

Rule 404. Intoxicating Liquor.* 

No employee shall, while under the influence of intoxicating 
liquor, go aboard a gold dredge, nor shall any employee carry 
intoxicating liquor aboard the same. It shall be the duty of 
the dredgemaster, or the man in charge, to enforce this rule 

’Attention is called to the fact that an injured employee is not 
entitled to compensation where the injury is caused by the intoxication 
of the injured employee.—Workmen’s Compensation Law, page 7, Sec. 
6 , par. 3. 



10 


Safety Rules for Gold Dredges. 


Rule 405. Sanitary Requirements. 

(a) Drinking Water. 

[An excerpt from the statutes and amendments of the codes of the State 

of California.] 

An act to require employers of labor to furnish, without 
charge, pure drinking water to their employees during 
working hours. (Approved May 24 , 1915 . In effect 
August 8 , 1915 .) 

“Every employer of labor in this state shall, without making 
a charge therefor, provide fresh and pure drinking water to 
his employees during working hours. Access to such drinking 
water shall be permitted at reasonable and convenient times 
and places. 

“Any violation of the provisions of this act shall be deemed 
a misdemeanor and punishable for each offense by a fine of 
not less than twenty-five dollars ($25.00), nor more than one 
hundred dollars ($100.00), or by imprisonment for not more 
than thirty (30) days, or by both such fine and imprisonment.” 

(b) Toilets. 

It shall be the duty of the operators of every gold dredge 
to provide a suitable enclosed toilet on the dredge. 

Rule 406. Illumination. 

All parts of the dredge, where men are required to be or go, 
shall be provided with adequate light. 

Rule 407. Fire Protection. 

A box containing at least two (2) cubic feet of clean, dry 
sand and a scoop shall be kept at each of the following places 
on all gold dredges: Winch room, each oil switch or auto 
starter or each group of oil switches or auto starters, oil and 


Industrial Accident Commission. 


11 


grease storeroom; provided, that one approved extinguisher 
of the one-quart carbon tetrachloride type may be substituted 
for each two (2) cubic feet of sand required. 

Rule 408. Protection Against Drowning. 

(a) Safety Ladders for Hulls. 

Safety ladders must be fastened to each side of the hull of 
the boat, which are to extend from the main deck to three (3) 
feet below water line. One ladder must be placed on the for¬ 
ward end of each pontoon and one on each outer side forward 
of the main house. 

(b) Life Line. 

A wire hand rope shall be run along both sides of the boat 
and so hung that it shall be at all times at or near the water 
line; an additional line shall be used where necessary to meet 
this provision. 

(c) Life Buoys. 

A standard size, circular cork life buoy, with sufficient 
length of rope attached, must be placed on the main deck of 
each boat on each side, just inside of forward end of main 
house, in a convenient place, and maintained in serviceable 
condition. 

The life buoys and attached rope shall be secured with seals, 
which are to be broken only in case a man has fallen into the 
pond. 

(d) Grappling Hook. 

A grappling hook with sufficient rope attached to reach the 
bottom of the pond shall be placed in a convenient place on 
the main deck of every dredge and secured by a seal. This 
seal is to be broken only in case a man has sunk in the pond 
and it is necessary to grapple for his body. 


12 


Safety Rules for Gold Dredges. 


The grappling hook shall have not less than three prongs 
and the shank shall be at least 16 inches in length. The 
distance from the points of the prongs to the center of the 
shank shall not be less than 6 inches. 

Rule 409. Goggles. 

A suitable pair of goggles shall be issued to each individual 
worker who is exposed to any serious eye hazard through the 
nature of his work. 

Rule 410. Hand Tools. 

Hand tools shall be regularly inspected and the heads 
annealed and dressed as often as necessary. 


Industrial Accident Commission. 


13 


GUARDS AGAINST PERSONAL FALLS AND 

FALLING OBJECTS. 

Rule 421. Gantry Platforms. 

Platforms shall be provided on bow and stern gantrys at a 
convenient distance below all sheaves so that such sheaves 
shall be safely accessible for greasing or other purposes. 
These platforms shall be of close planking, not less than 
two (2) inches in thickness and suitably supported. Openings 
not larger than necessary to admit free passage of ladder, 
spud, and stacker lines shall be left and protected by toe- 
board and such sections of the flooring as necessary to permit 
the working of the head lines shall be made removable. 

Gantry platform railings shall be of substantial construction 
and securely fastened. If pipe railings are used, floor flanges 
will not be considered a secure method of fastening, unless 
stanchions are extended through platform and flanges bolted 
through. 

Rule 422. Railings and Toe-boards. 

(a) Railings. 

The outside edges of all decks, elevated walks, runways or 
platforms, except the roof of the winch house and the main 
deck, if four (4) feet or more from the water or deck below, 
must be provided with a railing not less than three and one- 
half (3]A) feet high and also an intermediate railing midway 
between the top rail and the deck or toe-board.* 

(b) Toe-boards. 

If the height exceeds six (6) feet above water or deck 
below, a toe-board must be provided to prevent material from 

*Note.—T hirty-six (36) inch railings will he permitted where in 
existence at the time these rules go into effect. 


3—39374 



14 


Safety Rules for Gold Dredges 


rolling or falling off, except that no toe-boards shall be 
required on the stacker runways, roof of the winch house, or 
the main deck walk across the stacker belt at the lower end. 

(c) Deck or Platform Openings. 

All deck or platform openings must be guarded with a 
railing, not less than three and one-half (3 l / 2 ) feet high, hav¬ 
ing a toe-board not less than six (6) inches high, and an 
additional railing midway between the toe-board and top rail. 
Railings are to be constructed in a safe and substantial man¬ 
ner, of either pipe, metal work or wood. One or more sides 
may be on hinges, or if hinges are impracticable, sockets may 
be used. The screen well shall be considered a deck opening. 

All deck or platform openings which can not be guarded as 
required in this manner must be guarded with a cover, prefer¬ 
ably hinged. 

(d) Doorways. 

Doorways used as boat landings shall be guarded with a 
single rail which may be more than forty-two (42) inches but 
not more than sixty (60) inches above the deck, or else vertical 
hand rails shall be provided on each side of doorway. 

(e) Access to Elevated Platforms. 

Permanent elevated platforms must be equipped with a per¬ 
manent stairway or stationary ladder. Where a stationary 
ladder or stairway passes through any elevated platform, the 
opening shall be of sufficient size to permit of easy passage in 
a normal position by any one using the ladder or stairway. 

Rule 423. Ladders. 

(a) Substantial Construction. 

All ladders shall be of substantial construction throughout 
and shall be maintained in a safe condition, with the rungs 


Industrial Accident Commission. 15 

tightly fastened and free from seriously weakening cracks 
or wear 

(b) Spacing of Rungs. 

Rungs shall be spaced uniformly and be not less than 
twelve (12) inches or more than fifteen (15) inches from 
center to center. 


FIXED LADDERS. 

(c) Construction of Rungs. 

Rungs, if of wood, shall be of clear lumber, free from 
checks and knots, of a minimum size of one and one-quarter 
by three (1^x3) inches, and set in stringers at least three- 
quarters (24) of an inch at the bottom. 

(d) Clearance. 

There shall not be less than six (6) inches clearance from 
each rung to the nearest permanent object back of the ladder. 

(e) Projection of Rungs. 

If the ladder is made by nailing rungs to a vertical or 
inclined post or upright, the ends of rungs shall project at 
least six (6) inches beyond the post or upright at each end. 

(f) Width of Ladders. 

Stringers shall be spaced not less than fifteen (15) inches 
apart. 

(g) Projection Above Platform. 

Ladders shall project at least three feet six inches (3'6") 
above any platform to which the ladder leads, unless con¬ 
venient and secure hand-holds are fixed at such places. 



16 


Safety Rules for Gold Dredges. 


PORTABLE LADDERS. 

(h) Precautions Against Slipping. 

All portable ladders (except substantial stepladders) must 
be provided with either sharp points at the foot, or wide, 
rough surface feet, or other effective means to prevent 
slipping. Ladders for use in oiling overhead shafting, where 
necessary to rest same on the shafting, must be arranged to 
hook over the shafting. 

(i) Width of Ladders. 

All portable ladders are not to be less than twelve (12) 
inches wide at the top rung, measured between stringers.* 

Rule 424. Stairways.t 

(a) Handrails. 

All stairways must be equipped with handrails, the top of 
which shall be thirty-six (36) inches vertically from the center 
of the tread, as follows: 

1. Where the stairway is not built next to a wall or par¬ 
tition, rails must be placed on both sides. 

2 If stairway is closed on both sides, at least one handrail 
must be provided. 

3. If width is greater than four (4) feet, rails must be pro¬ 
vided on each side. 

(b) Illumination. 

All stairways must be properly lighted either by natural or 
artificial light. 


*Note —It is suggested that the width of ladder be increased one- 
half (A) inch per foot of length from top to bottom. 

f Note. —Stairways should not be built at a sharper angle than fifty 
(50) degrees from the horizontal. For sharper angles, ladders should be 
used instead. 






Industrial Accident Commission. 


17 


(c) Risers and Treads. 

On any one stairway the risers shall be of a uniform height 
and the treads of a uniform width.* 

Rule 425. Stacker Runways. 

Uniformly spaced cleats shall be provided on stacker run¬ 
ways and maintained in good condition and tightly fastened. 
No toe-board is required on these runways but an intermediate 
rail shall be provided halfway between the top rail and run¬ 
way; this rail may be of wire rope, if preferred. A safe 
approach shall be provided to the inner ends of both stacker 
runways. 

Rule 426. Stacker Crossover. 

A crossover walk from the port stacker runway to the star¬ 
board stacker runway at or near their outer ends shall be 
provided and equipped with a railing. 

Rule 427. Stacker Rock Stops. 

Rock stops to prevent rock from rolling back'on the stacker 
belt shall be placed over the belt not more than fifty (50) feet 
apart, the lower stop to be not more than twenty-five (25) 
feet from the end of the screen delivery chute. 

Rule 428. Stacker Belt Side Guards. 

Side guards of substantial construction and at least six (6) 
inches high shall be provided on both sides of the stacker belt. 

*Note.— The sum of a tread and a riser shall be 17^2 inches as 
nearly as possible. 





18 


Safety Rules for Gold Dredges. 


MACHINERY AND POWER TRANSMISSION. 

Rule 441. Gears. 

All gear wheels must be protected with a closed guard of 
metal, wood or wire mesh, of such dimensions and construc¬ 
tion that the point of mesh of the gears can not be reached 
from outside the guard and that no shear will exist between 
the spokes of the gear wheel and any portion of the guard or 
adjacent structures. A suitable trap or opening shall be pro¬ 
vided at a point well away from the point of mesh so that the 
gears can be safely greased while running. 

Rule 442. Belts. 

(a) Belts Must Be Guarded. 

All belts, ropes or chains driving machinery or shafting, 
where exposed to contact, must be guarded. In all cases the 
point where the belt, rope or chain runs on to the pulley, 
sheave or sprocket, if within seven (7) feet of the deck or 
platform, must be guarded. 

Exception: Belts which are so small or so slow moving 
that they are not in any way a source of danger. 

(b) Horizontal Belts. 

All horizontal belts, ropes or chains driving machinery or 
shafting, seven (7) feet or less above the deck or platform, 
where exposed to contact, must be guarded. All overhead 
belts six (6) inches or more in width and over seven (7) feet 
from deck or platform, must be guarded underneath and on 
sides, unless so guarded that persons can not pass under 
them. All chain or rope drives over seven (7) feet from 
deck or platform must be guarded in the same manner as 
required for belts over six (6) inches in width. In all cases 
the guard must cover the outer faces of the two pulleys or 


Industrial Accident Commission. 


19 


sheaves and extend upward to such a point and be attached 
in such a way, that in case the belt, chain or rope breaks, the 
guard will withstand the whipping force. 

(c) Vertical and Inclined Belts. 

Vertical and inclined belts must be substantially guarded 
with a complete enclosure of wood or metal to a height of 
six (6) feet above the deck. 

Rule 443. Pulleys. 

All pulleys or parts of pulleys within seven (7) feet of a 
deck or platform must be guarded where exposed to contact. 

Rule 444. Stacker Drum. 

Point of contact of stacker belt with the upper side of the 
drum at the outer end of stacker shall be guarded in such a 
manner as to prevent possibility of injury between the belt 
and drum. 

Rule 445. Sprockets. 

All sprockets must be guarded where exposed to contact. 

Rule 446. Clutches. 

All clutches must be completely guarded where exposed to 
contact. 

Rule 447. Screen Rollers. 

(a) Tread Rollers. 

Tread rollers shall be covered with a closed guard and the 
guard must extend over the contact of the roller with the 
tread ring on the revolving screen and up at least two (2) feet 
on said tread ring above the point of contact. The housing 
may be of wood, metal or wire mesh. 


20 Safety Rules for Gold Dredges. 

(b) Thrust Rollers and Guide Rollers. 

The point of contact of thrust rollers and guide rollers with 
the tread ring shall be completely guarded. 

Rule 448. Shafting. 

All transmission shafting, either horizontal or vertical, and 
all dead ends of shafts wherever exposed to contact must be 
guarded. 

Rule 449. Set Screws. 

All projecting set screws on moving parts must be removed, 
countersunk or protected by a solid collar, or a headless set 
screw must be used. No part of the set screw must project 
above the surface. 

Rule 450. Keys and Keyseats. 

All projecting keys in shafting, where exposed, must be cut 
off or guarded, and all keyseats in ends of shafts, where 
exposed, must be filled flush or guarded. 

Exception: Keys in the upper tumbler shaft and swing- 
winch drum shafts shall be excepted from this requirement. 

Rule 451. Flywheels. 

All flywheels shall be guarded with a closed guard to the 
height of six (6) feet or to the top of the flywheel. 

Rule 452. Grease Cups. 

All grease cups with the exception of self-feeding cups 
shall be in a safe and convenient place for the oiler to reach; 
if necessary, this shall be obtained by piping them out. 

Rule 453. Sheaves. 

All sheaves shall be guarded so as to eliminate any shear 
between the spokes or web of the sheave and any part of the 



Industrial Accident Commission. 


21 


frame or housing and also to prevent possibility of a person 
being drawn into the sheave by a line or of being jammed 
between the line and the housing or guard. 

Rule 454. Bow Line Fair-Lead Track Rollers. 

Bow line fair-lead track rollers shall be guarded with a suit¬ 
able fender traveling ahead of the roller on the track and so 
adjusted and constructed as to prevent a man’s hand or foot 
from passing beneath the fender or being jammed between the 
fender and the track. 

Rule 455. Spud Lines. 

Spud lines shall be completely housed with metal or wood 
from the aftermost deck sheave to a point six (6) feet above 
the top deck. 


Rule 456. Grinding Wheels.* 

(a) Protection Hoods. 

Straight grinding wheels must be provided with a complete 
protection hood of sufficient strength to retain broken parts in 
case the wheel should break. This hood must be adjusted 
close to the wheel and extend forward over the top of the 
wheel to a point at least thirty (30) degrees beyond a vertical 
line drawn through the center of the wheel. 

*Note. —Wheels should be handled with the greatest care in unpack¬ 
ing, storing, delivering, etc., and should never be left standing on the 
ground or wet places. Great care should be used in mounting wheels; 
never force a wheel on the arbor. It is advisable to use thin, com¬ 
pressible washers between wheel and flange to obtain a perfect bearing 
at the outer edge of the flange; both flanges should be of the same 
diameter and the arbor nut should not be tightened more than is neces¬ 
sary to hold the wheel securely. Vibration should be avoided at all 
times. 



22 


Safety Rules for Gold Dredges. 


(b) Flanges. 

Wheels shall never be run without flanges. The inner 
flange shall be either shrunk, keyed or screwed on to the 
spindle. 

The sizes of straight flanges used with straight wheels and 
protection hoods shall not be less than those shown in the 
following table. 


Straight Flanges and Straight Wheels Used With 

Protection Hoods. 


A 

B 

c 

D 

Diameter of wheel in inches 

Minimum 
outside 
diameter 
of flange 

Minimum 
diameter 
of recess 

Minimum 
thickness 
of flange 
at bore 

6 _ 

2 

1 

I 

8 _ 

3 

2 

s 

10 _ 

3 h 

2i 


12 _ 

4 

25 

* 

14 _ 

4 h 

3 

* 

16 _ 

5i 

3* 

h 

18 __ 

6 

4 

1 

20 _ 

7 

4* 

1 

22 _ 

n 

5 

1 

24 __ 

8 

5i 

5 

26 _ 

8i 

6 

1 

28 _ 

10 

7 

1 

30 _____ 

10 

7 

5 


Where protection hoods are not used, protection wheels 
fitted with protection flanges must be provided. 
































Industrial Accident Commission. 


23 


(c) Arbor Ends. 

Arbor ends must be guarded. 

(d) Speed of Wheels. 

Speed of wheels must not exceed the speed recommended by 
the manufacturer. 


Table of Grinding Wheel Speeds. 


Diameter of wheel in inches 

Revolutions 
per minute 
for surface 
speed of 
4,000 feet 

Revolutions 
per minute 
for surface 
speed of 
5,000 feet 

Revolutions 
per minute 
for surface 
speed of 
6.000 feet 

1 _ 

15,279 

19,099 

22,918 

2 _ 

7,639 

9,549 

11,459 

3 ___ 

5,093 

6,366 

7,639 

4 _ 

3,820 

4,775 

5,730 

5 _ 

3,056 

3,820 

4,584 

6 _ 

2,546 

3,183 

3,820 

7 ____ 

2,183 

2,728 

3,274 

8 _ 

1,910 

2,387 

2,865 

10 _ 

1,528 

1,910 

2,292 

12 ____ 

1,273 

1,592 

1,910 

14 _ 

1,091 

1,364 

1,637 

16 _ 

955 

1,194 

1,432 

18 _ 

849 

1,061 

1,273 

20 ___ 

764 

955 

1,146 

22 _ 

694 

868 

1,042 

24 _ 

637 

796 

955 

26 _ 

586 

733 

879 

28 __ 

546 

683 

819 

30 ___ 

509 

637 

764 

32 _ 

477 

596 

716 

34 ___ 

449 

561 

674 

36 __-. 

424 

531 

637 


The revolutions per minute at which wheels are run is 
dependent on conditions, and in actual practice wheels are run 
at surface speeds of from 4,000 to 6,000 feet per minute up to 




































24 


Safety Rules for Gold Dredges. 


as high as 7,500. It is recommended that for most grinding 
operations surface speeds should not exceed 6,000 feet. As a 
wheel wears down, the speed may be increased to maintain the 
same surface speed, and great care must be exercised when a 
new wheel is provided to avoid over-speeding. 

(e) Eye Protection. 

Unless an individual pair of goggles is furnished to every 
man who has occasion to use the grinding wheel, each wheel 
shall be guarded with a fixed eye guard of plate glass, so 
placed as to prevent possible injury to the eye from flying 
particles. The glass shall be maintained in a clean and 
serviceable condition. 

(f) Tool Rests. 

If tool rests are used, they shall be at all times kept within 
one-eighth ( J /g) of an inch or less of the surface of the wheel. 


Industrial Accident Commission. 


25 


ELECTRICAL. 


Definitions : 

The term “high voltage” shall mean all voltage at or above 
650 volts; “medium voltage,” all voltage between 300 and 650 
volts, and “low voltage,” all voltage below 300 volts. 

Rule 461. Danger Signs. 

All machines and apparatus operating at or above six hun¬ 
dred and fifty (650) volts shall be marked by the use of the 
word “danger” followed by an indication of the voltage carried. 


Rule 462. Grounding of Dredge and Electrical Equipment. 

(a) Electrical Equipment. 

The noncurrent carrying metal parts of all electrical equip¬ 
ment on the dredge shall be effectively grounded. Effective 
grounding on a wooden boat shall consist of linking the water 
pipe system and the frames of the main and swing winches 
together, with a suitable metallic connector, and effective 
metallic connection of the part to be grounded to this system. 
On steel boats, grounding to the frame of the boat by bolting 
to it, or by other equally effective means, shall be considered 
effective grounding. 


(b) Power Cable. 

The power cable shall not be handled with the uninsulated 
hand while the power is on.* 


•Note.—I t is recommended that the armor of the power cable lead¬ 
ing from the bank to the boat be grounded by attaching a clamp to the 
cable at or near the shore pole and fastening a number “0” stranded 
copper cable to it and connecting this copper cable to a solid iron pin 
or pipe at least one (1) inch in diameter and driven six (6) feet into 
the ground. 



26 


Safety Rules for Gold Dredges. 


Rule 463. Insulation of Conductors. 

(a) Overhead Lines. 

Overhead transmission lines between the generating station 
or substation and the shore pole to which is attached the end 
of the power cable leading from the bank to the dredge, shall 
be supported upon insulators, which shall be adequate in 
quality, size and design for the voltage transmitted. Such line 
shall be maintained not less than fourteen (14) feet above the 
ground or any structure used as a passageway. 

tb) High-voltage Wires. 

All high-voltage wires installed between the shore pole and 
the dredge, as well as on the dredge, shall be in the form of 
properly insulated cables, which shall be armored or effectively 
protected against abrasion, but the armor shall be electrically 
continuous throughout, and shall be effectively grounded. The 
installation of efficiently insulated wires in grounded metal 
conduit to transmit power shall be considered to meet this 
requirement. 

(c) Fixed Wires Carrying Medium Voltage. 

All medium voltage conductors installed after the effective 
date of these rules, if maintained closer than eight (8) feet of 
the top side of decks, platforms, runways or the top end of 
fixed ladders or closer than three (3) feet horizontally from 
them, shall be enclosed in permanently grounded metal con¬ 
duit. 

(d) Support and Insulation of Cables and Wires Carrying 

Low and Medium Voltage. 

All cables and wires carrying low and medium voltage, 
unless provided with grounded metallic covering shall be 
effectively insulated and shall be supported by efficient insu- 


Industrial Accident Commission. 


27 


lators. The conductors connecting lamps to the power supply 
shall in all cases be insulated. 

(e) Cables Entering Fittings. 

Where unarmored cables or wires pass through metal 
frames or into boxes or motor casings, the holes shall be 
substantially lined with insulating bushings. 

(f) Joints in Conductors. 

All joints in conductors shall be mechanically and elec¬ 
trically efficient, and shall be soldered wherever necessary. 
All joints in insulated wire shall, after the joint is complete, 
be re-insulated to the same extent as the remainder of the 
wire. 

Rule 464. Transformers. 

(a) Circuits Entering or Leaving All Transformers Pro¬ 

tected by Circuit Breakers. 

Circuits entering or leaving transformers shall be protected 
by automatic circuit breakers to interrupt the current, but fuses 
and a disconnecting switch may be substituted for a circuit 
breaker. 

(b) Primary Disconnecting Switch. 

Primary fuses and disconnecting switches shall be placed on 
shore in the primary circuit ahead of the transformers, but in 
no case shall these disconnecting switches be opened or closed 
under load. 

(c) Oil Switch. 

A main oil switch of sufficient capacity to interrupt the 
circuit must be installed on the primary circuit. 


28 


Safety Rules for Gold Dredges. 


(d) Transformer Rooms. 

Transformer rooms shall be properly lighted and shall be 
of fireproof construction. 

(e) Short Circuiting Instrument Transformer Secondaries. 

Instrument transformers, exclusive of potential transformers, 
shall be provided with a means for short-circuiting the 
secondaries, which can be readily connected while the primary 
is energized, and which are so arranged as to permit the 
removal of any instrument or other, device in such circuits 
without opening the circuits. 

Rule 465. Switchboards. 

(a) Accessibility. 

Switchboards shall, where practicable, be so placed that the 
persons necessarily near the board will not be endangered by 
machinery or equipment located near the board. 

(b) Construction. 

Main and distribution switch and fuseboards shall be made 
of noncombustible, nonabsorbent, insulating material, which 
shall be free from metallic veins. The board shall be mounted 
upon supporting frameworks of iron or steel and fixed in a 
dry place. If insulated conductors are used in the wiring of 
the board, the insulation of such conductors shall be flame¬ 
proof. 

(c) Working Space About Electrical Devices. 

Instruments, relays or other devices requiring reading or 
adjustment shall be so placed that work can be readily 
performed from the working space. 


Industrial Accident Commission. 


29 


(d) Arrangement and Identification. 

Connections, wiring and equipment of switchboards shall be 
arranged in an orderly manner and all switches and cutouts 
shall be plainly marked, labeled or arranged so as to afford 
ready means fpr identifying circuits or equipments supplied 
through them. 

(e) Live Parts Shall Have Protectors. 

Live parts of switchboards, which are ordinarily isolated or 
guarded, but which may occasionally require adjustment or 
repair during operation, shall be so arranged that suitable 
portable covers or shields can be effectively placed to protect 
workmen from contact with any neighboring live parts. 

(f) Spacings and Barriers Against Short Circuit. 

Bare parts of different potential on any switchboard or 
panel shall be as few as practicable and these parts shall be 
effectively separated. 

(g) Bare Parts Guarded Against Short Circuit. 

Bare parts, including bus bars, shall, when practicable, be so 
located or provided with barriers or substantial insulating- 
coverings that parts of different potential can not be acci¬ 
dentally short-circuited by tools or other conducting objects. 

Exception: This does not apply to panel boards mounted in suitable 
cabinets. 

(h) Inclosing Switchboard. 

All switchboards and panel boards having exposed current- 
carrying parts operating at over one hundred and fifty (150) 
volts to ground, and not isolated by elevation, shall be suitably 
inclosed in cabinets, screens, or rooms or other inclosures to 
make them inaccessible to others than the authorized operator. 


30 


Safety Rules for Gold Dredges. 


(i) Insulating Platforms. 

Conducting floors around switchboards shall be provided 
with a suitable insulating platform or mat so placed that no 
person can inadvertently touch live parts unless standing on 
the insulating platform or mat 

Rule 466. Switches, Fuses, Automatic Circuit Breakers, 

• Etc. 

(a) Switches Shall Be Provided. 

All points at which a circuit has to be made, or broken, 
shall be provided with proper switches, which shall be so 
installed that they can not be closed by gravity. 

(b) Szvitches Shall Be Safely Accessible. 

All switches, automatic cutouts, controllers, starting rheo¬ 
stats, autostarters and other control devices shall be readily 
and safely accessible; they shall be so located or marked when 
controlling circuits of over 1,320 watts, as sufficiently to indi¬ 
cate their function and the location and character of the equip¬ 
ment controlled by them and whether they are open or closed, 
except cutouts and switches in sealed inclosures. They shall 
be so installed as to minimize the danger of accidental opera¬ 
tion. 

(c) Szvitches Shall Have Rated Capacity. 

Switches shall have a rated capacity safely to interrupt, at 
the working voltage, the greatest current which they will be 
required to carry continuously. Rating means that they shall 
operate safely at 50 per cent overload in amperes and at rated 
voltage under the most severe continuous conditions which 
they are liable to meet in practice. 


Industrial Accident Commission. 


31 


(d) Fuses and Circuit Breakers To Be Shielded. 

Fuses and circuit breakers shall, as far as possible, be so 
located and shielded that persons will not be burned by their 
operation. 

(e) Handles or Levers of Circuit Breakers To Be Guarded. 

Parts, such as handles or levers of circuit breakers, which 
may move suddenly in such a way that persons in the vicinity 
are liable to be injured by being struck by them, shall be 
guarded or isolated, where practicable. 

(f) Signs Against Opening Disconnectors Under Load. 

Disconnectors are not rated as capable of opening safely 

under load, and shall be provided with signs warning against 

opening them while carrying current. 

Interlocking arrangements are desirable to prevent opening of such 
switches under load. 

(g) Means for Locking Switches. 

Means shall be provided so that switches controlling motors, 
transformers, and similar utilization equipment can, when 
closing would cause a hazard, be locked in the open position 
and tagged to prevent careless closing while work is being 
done on the equipment controlled by them. 

Small capacity snap switches, if near machines and in plain sight 
from all parts of the machines controlled, are exempted. 

(h) Alignment of Knife Switches. 

Knife switches shall maintain such alignment under service 
conditions that they may be closed with a single unhesitating 
motion into their contacts. 

(i) Guarding Live Parts of Switches. 

All manual switches shall have suitable casings or guards 
protecting the operator from danger of contact with current- 
carrying parts, effective during ordinary operation. 


32 


Safety Rules for Gold Dredges. 


(j) Mounting of Switches, Fuses, Circuit Breakers, etc. 

All switches, circuit breakers, rheostats, fuses, and all 
instruments used in connection with motor generators, rotary 
converters, transformers, and motors, shall be mounted on 
standard bases of noncombustible and insulating material. 

This provision shall not apply to compensators for induction 
motors. 

(k) Disconnecting Switch Ahead of Fuses. 

An individual switch shall be installed directly ahead of 
every fusible cutout in order that the fuses may be com¬ 
pletely disconnected from all sources of electrical energy when 
the cutout is being re-fused. Fuses shall be adjusted or 
replaced only by an authorized and competent person. 

(l) Fuses in Insulated Box. 

Fuses shall be located in a metal or insulating box. A 
legible warning against removing fuses before the switch con¬ 
trolling same is opened shall be placed on the outside of the 
cover of said metal or insulating box. This does not apply to 
fuses mounted on a switchboard.* 

(m) Capacity of Fuses. 

Fuses and automatic circuit breakers shall be constructed so 
as effectually to interrupt the current when a short circuit 
occurs or when the current through them exceeds a predeter¬ 
mined value. The capacity of fuses used to protect feeders 
shall not exceed the current capacity of the feeder by more 
than twenty-five per cent. 

*Note.—I t is recommended that where fused switches of the exter¬ 
nally operated type are used, the cover of the switch cabinet be so 
interlocked in relation to the switch handle as to prevent opening the 
cover until the switch has been opened, and to prevent the closing of 
the switch while the cover is open. 



Industrial Accident Commission. 


33 


(n) Capacity Shall Be Marked. 

Fuses shall- be stamped or marked, or shall have a label 
attached, indicating the maximum current that they are 
intended to carry. 

(o) Primary Meters. 

In no case shall primary meters be used on high voltage 
circuits. 

(p) Neutral Conductors in Three-Wire Systems To Be 

Without Automatic Cutouts and Switches. 

Neutral conductors in three-wire systems shall be arranged 
without automatic cutouts interrupting their continuity, and 
without switches unless the switch opens all conductors of the 
circuit with one operation. In two-wire branches from three- 
wire circuits the conductor connected to the neutral is not 
considered a neutral conductor. 

(q) Grounded Conductors To Be Without Automatic Cutouts. 

All conductors grounded for the protection of persons shall 
be arranged without automatic cutouts interrupting their con¬ 
tinuity between the source of electrical supply and the point 
to which the ground wire is attached. Switches shall open 
all conductors of the circuit with one operation. 

Where the utilization equipment is connected to electrical supply 
lines, the point of connection is considered as the source of electrical 
supply. 

Rule 467. Motors. * 

(a) Circuit Breakers and Cutouts. 

Every stationary motor and every portable motor, together 
with its starting device, shall be protected by a circuit 
breaking device or by fuses on each line and switches 
arranged to cut off entirely the power from the motor. 


34 


Safety Rules for Gold Dredges. 


(b) Guards for Moving Parts. 

Suitable guards or inclosures shall be arranged at each 
motor when necessary to prevent persons or objects from 
inadvertently coming in contact with moving parts. 


(c) Manually-Controlled Starters for Motors. 

Manually-controlled starters for motors shall be so designed 
and circuits so arranged that they return automatically to the 

“off” position upon failure of the energy supply, except where 
motors are under competent supervision or equivalent protec¬ 
tion is otherwise provided. 

The exception in this instance refers to controllers whose operation 
requires the constant attention of an operator, such as hoists, cranes, 
and winch motors. The controllers of direct connected centrifugal 
pump motors, where the couplings are properly guarded are also 
excepted. 

(d) Guards for Live Parts. 

The live parts of motors operating at over 250 volts, unless 
such live parts are inclosed or isolated by elevation at least 
eight (8) feet above the floor line, shall, if practical, be 
provided with permanent inclosures, or other suitable guards; 
such inclosures so arranged as to prevent persons or conduct¬ 
ing objects from inadvertently coming or being brought into 
contact with said live parts. 


(e) Insulating Mats Required. 

Suitable insulating mats or platforms of substantial con¬ 
struction and providing good footing shall be so placed on 
floors, and, if necessary, on frames of machines having exposed 
live parts above 150 volts to ground, that operators can not 
touch such parts unless standing on the mats or platforms. 

The suitable guarding of live parts by inclosures or barriers 
effective during attendance will obviate the necessity for insu¬ 
lating mats, and where such mats are impracticable from the 


Industrial Accident Commission. 


35 


nature of the location or processes carried on, guards shall 
always be used. 

Rule 468. Electric Lighting. 

(a) Lamp Sockets. 

The exterior of the sockets of all incandescent lamps, 
installed after these rules go into effect, shall be entirely non- 
metallic. 

(b) Flexible Lamp Cord. 

The use of flexible lamp cord for lighting connection is 
prohibited except where its use is necessary on account of 
excessive vibration or for portable incandescent lights, to be 
used in connection with the inspection and repair of 
machinery and equipment; and in that case the cord shall be 
especially insulated or armored. Such portable lights shall be 
protected by a cage large enough to inclose both lamp 
and socket, unless a socket with nonmetallic exterior is used 
A handle shall be provided to which the light and socket shall 
be firmly attached and through which the leading-in wires 
shall be carried, except that where the insulation of the 
leading-in wires is thoroughly reenforced by taping, the handle 
may be omitted. 


Young Man Killed 
By Electric Current 

Special Dispatch to The Chronicle. 

WALNUT GROVE, February 9 .— 
Thomas P. MacLaughlin, 20 years old, 
a bookkeeper, was killed by an elec¬ 
tric shock on the bridge here. The 
body fell into the Sacramento river. 
MacLaughlin was standing on the 
bridge when he started to climb over 
the railing down to a boat. In doing 
so his feet touched an electric conduit 
pipe. The line inside the conduit car¬ 
ries only 220 volts. Twenty-five min¬ 
utes later the body had been removed 
from the water. 

ft was not known that the conduit 
cover was alive with electricity, as it 
was supposed to be well insulated. 





INDEX. 


A 

Air, Air Pressure Tank Safety Orders to apply (appli¬ 
cation) _____ 

Application, of rules__ 

B 

Belt, side guards, for stacker_ 

Belts, horizontal, if 7 feet of deck to be guard.d_ 

Belts, if exposed must be guarded_ 

Belts, vertical and inclined, guarded to 6 feet above deck 

C 

Cable, power, grounding of__ 

Cables, entering fittings_ 

Circuit breaker, for circuits entering or leaving trans¬ 
formers __ 

Circuit breakers, for stationary and portable motors.. 

Circuit br.akers, handl s or levers to be guarded- 

Circuit breakers, to be guarded against contact_ 

Circuit breakers, to be mounted on insulating material. 

Clutches, to be guarded_ 

Conductors, grounded, to be without automatic cutouts 
Conductors, neutral, in 3-wire systems to be without 

automatic cutouts and switches- 

Crossover, stacker _ 

D 

D finitions, “high,” “medium” and “low” voltage_ 

Disconnectors, warning signs not to open under load... 
Doorways, used as boat landings must have guard rail 
Drowning, protection against _ 

E 

Electrical ----- 

Electrical equipment, grounding of_ 

Exemptions, to be mad’ in writing to be effective (ap¬ 
plication) _ 

Explosives, Orders 3104, 1105, HOG and 1307 of General 
Construction Safety Orders to apply (application)— 

F 

Falls and falling objects, guards against- 

Fire, sand and chemical extinguishers- 

First aid equipment, tables 1 , 2 and 3- 

First aid training for on ’ man on each shift- 

Flywheels, to be guarded to top of wheel- 

Fuses, capacity not to exceed 25% of feed r- 

Fuses, capacity shall be marked- 

Fuses, must be located in insulating box- 

Fuses, to be guarded against contact- 

Fus s, to b mounted on insulating material- 


Par. Unit Page 


— 

-- 

4 

4 


428 

37 

b 

442 

38 

a 

442 

38 

c 

442 

39 

b 

462 

25 

e 

463 

27 

a 

464 

27 

a 

467 

33 

e 

466 

33 

d 

466 

33 

j 

466 

32 

_ _ 

446 

39 

q 

406 

33 


466 

33 


426 

37 


f 

466 

33 

d 

422 

34 

a-d 

408 

31 

.. 463-468 

25-35 

a 

462 

25 

.. 423-428 

4 

13-17 

_ _ 

407 

10 

b 

408 

7-9 

c 

403 

9 

_ 

451 

20 

in 

466 

32 

n 

466 

33 

1 

466 

QO 

d 

466 

33 

j 

466 

32 































38 


Index. 


G Far. Rule Pat;e 

Gears, guard of metal, wood or wire mesh- -- 441 18 

Goggles_ — 409 12 

Grappling hook, with attached rope- d 408 11 

Grease cups, to he in safe place to reach- — 452 

Grinding wheels, arbor ends must he guarded- c 456 22 

Grinding wheels, must have flanges- b 450 

Grinding wheels, must have prot ction hoods- a 450 21 

Grinding wheels, must not exceed manufacturer’s spe d d 450 23 

Grinding w heels, tool rests to be within J-inch of wheel- f 453 24 

Grinding wh els, to have fix d guard of plate glass- e 456 24 

Grounding, of dredge and equipment- a 462 25 

Grounding, of power cable- b 462 25 

Guide rollers, screen_ b 447 

H 

High voltage, definition _ 

High voltage wires, on beat and between boat and 
shore to be insulated_-_ b 463 20 

I 

Illumination, of stairways_ b 424 10 

Illumination, to be provid d_ 400 10 

Insulation, fix d medium voltage wires within 8 feet of 

decks _ c 463 20 

Insulation, for unarmored cables or wires entering 

fittings - e 463 27 

Insulation, high voltage wires on boat and between 

boat and shore_ b 463 26 

Insulation, joints in conductors_ f 463 27 

Insulation, low r and medium voltage wires- d 433 26,27 

Insulation, mats or platforms for motors_ e 407 34,35 

Insulation, of overhead shorelines_ a 463 26 

Insulation, platforms for switchboard_ i 485 39 

• Injur d, care of _a, b, c 403 7-9 

Injuries, fatal, reporting of_ a 402 0 

Injuries, personal, reporting of_ b 402 6 

J 

Joints, in electric conductors to be insulated_ f 463 27 

K 

Keys, if exposed to be guard d_ 450 20 

Key seats, if exposed to be filled or guarded_ __ 450 20 

L 

Ladders, fixed, cl arance back of _ d 423 15 

Ladders, fixed, construction of rungs_ c 423 15 

Ladders, fixed, proj ction above platform_ g 423 15 

I.adders, fixed, projection beyond post_ e 423 15 

Ladders, fixed, width not less than 15 inches_ f 423 15 

Ladders, for sides of hulls_ a 408 11 

Ladd rs, portable, prevention from slipping_ h 423 10 

Ladders, portable, width not less than 12 inches_ i 423 16 

Ladd rs, rungs to be spaced uniformly_ b 423 15 

Ladders, substantial construction _ a 423 14 

Lamp, flexible cord, prohibited except for repair work- b 468 35 








































Index. 


39 


Par. Rule Pa^e 

Lamp, sockets, exterior of sockets to be nonmetallic.— a 468 35 

Life buoys, with attach d rope_ c 408 11 

Life line, on sides of hull_ b 4C8 II 

Liquor, intoxicating, prohibited on dredge_ __ 404 9 

Low voltage, definition__ 

Low voltage wires, to be insulated_ d 463 26,2? 

M 

Machinery and power transmission_ __ 441-456 18-24 

Medium voltage, definition _ _ 

Medium voltage, fixed wires to be insulated_ c-d 4G3 26,2? 

Meters, primary, not to be used on high voltage circuits o 463 33 

Motors, guards for moving parts_ b 467 31 

Motors, insulating mats or platforms must be provided 

if current exceeds 150 volts_ e 467 34,35 

Motors, live parts over 250 volts and within 8 feet of 

floor must be inclosed_ d 467 34 

Motors, manually controlled starters to return to “off” 

position on failure of energy supply_ c 467 24 

Motors, stationary and portable, must have circuit 
breakers and cutouts_ a 467 33 

N 

Notie s, designation of person for servic ■ of notices to 

remain in force until revoked_-_ b 401 5 

Notices, operator must appoint person upon whom 

notices are to be served_ a 401 5 

Notices, service of notic s on designated person d emed 

service on operator_ c 401 5 

O 

Openings, in deck or platform must be guard d by 

railings and toeboards_ c 422 14 

Overhead lines, on shor\ to be insulated- a 433 26 

P 

Platforms, elevated, access to, to be provided with 

stationary stairway or ladder- e 422 14 

Platforms, gantry, construction of- -- 421 13 

Power, cable, grounding of- b 462 25 

Pulleys, within 7 feet of deck or platform to be guarded 443 IS 

R 

Railings, about decks, elevat'd walks, runways and 

platforms _ a 422 13 

Rock stops, stacker_ -- 427 17 

Runways, stacker _ -- 425 17 

S 

Safety and welfare, general_ __ 401-410 5-12 

Sanitation, state law on drinking water- a, b 405 10 

Sanitation, toilets _ b 406 10 

Screen, guide rollers to be guarded- b 447 20 

Screen, thrust rollers to be guarded- b 447 20 

Screen, tread rollers to be guarded- a 447 10 

Set screws, if proj:cting to be guarded--449 2Q 

































40 Index. 

Far. Rule Page 

Shafting, to be guarded if exposed to contact- -- 448 20 

Sheaves., to be guarded- -- 453 29, 21 

Signs, danger, on apparatus carrying 6"0 volts or over_ -- 461 25 

Sprockets, to be guarded_ -- 445 1!) 

Spud lines, to be housed to point 6 feet above top d ck -- 455 21 

Stacker, belt side guards- -- 428 17 

Stacker, crossover from port to starboard runways- -- 426 17 

Stacker, outer pulley to be guarded- -- 444 19 

Stack r, rock stops, over conveyor belt--- -- 427 17 

Stacker, runways, cleats and intermediate rail- — 425 17 

Stairways., railings 36 inches from tread- a 424 16 

Stairways, risers of uniform height and treads of uni- 

f jrm width_ c 424 17 

Stairways, to be properly lighted- b 424 16 

Starters, manually controlled for motors- c 467 34 

Switch, oil, for primary circuit_ c 461 27 

Switch, primary disconnecting, ahead of transformer in 

primary circuit on shore- b 464 27 

Switchboards, accessibility _ a 465 28 

Switchboards, bare parts guarded against short circuit g 465 2 ) 

Switchboards, bare parts, kept to minimum- f 465 29 

Switchboards, construction _ b 465 28 

Switchboards, insulat d platform or mat in front of-_ i 465 30 

Switchboards, protection for live parts_:- e 465 2!) 

Switchboards, switches and cutouts identified- d 465 29 

Switchboards, with exposed live parts, to be inclosed— h 465 29 

Switchboards, working space about_ c 465 28 

Switches., and other control devices to be accessible- b 466 30 

Switches, fuses, circuit breakers, etc., to be mount d on 

noncombustible bases_ j 466 32 

Switches, knife, must have correct alignin'nt- li 466 32 

Switches, manual, live parts must be guarded_ i 466 31 

Switch s, means provided for locking when open_ g 466 31 

Switches, must be installed ahead of every fusible cutout k 466 32 

Switches, must b 1 provided for all circuits_ a 465 30 

Switches, shall have sufficient capacity to interrupt 

current _ c 466 30 

T 

Telephones, to be installed at or near dredge_ a 403 7 

Thrust rollers, screen _ b 447 20 

Toeboards, must be provided on edges of decks, ele¬ 
vated walks, runways or platforms, 6 feet above d'ck 

or water below_ b 422 13,14 

Toilets, to be provided_ b 405 10 

Tools, hand _ __ 410 12 

Track rollers, bow line fair-lead to be guarded_ __ 454 21 

Transformer rooms, to be lighted and fireproof_ d 464 28 

Transformer, secondaries, means for short circuiting-— e 464 28 

Tread rollers, screen _ a 417 19 

W 

Water, drinking, state law_ a 465 10 

39374 8-18 2500 















































































































































































































































































• . ‘ '• 

: ■ '■■■!':.v , ••;}' 7' ViV/-. 4 

■ • % ' .... ..... ' ■ ' . * J ■ [>’ ■ 

t- ‘ *; • * - .* . , .... . 7 ' • w .. ifl 

* ' .. •• • • . • • • - iU 


. t : • • ■ . . x ' *. 

... 

■ 

. 

. 

• • ••■ ■ 77'.itJJx'Vjijn 


■ "... * 

•' • ' • , ' >■' * ' ' • ‘ ‘ . ... / 

•f ■ ■ ■ 

:■ . ... ........ ... • • 

- ..... . . 


. .... . .. 

)■ M / 


. - 7.7 


. . , ,:V.< 

f 7,>? Wtf&v* 





' il;,/ 

' 




: .i 


k ruiiKv 

3 m 


. . 

7 .: i ... ' • • ■ - - . ' ' • 

' 

' . ..... .. ; < . . • •' '• , 

•' ' ■ ' •• ■ ■ \ v :■ V • ■■■ : 


1 


1 ^ 


' : -.i ;• ; x 

• f j-’, 


; • ■ / . ■. •: • ■ . : ■. : 

•. V • . • ' ....... I I; lil'Jt 

' 

■ 

.. 


| 

. 

... ■ i . . . . ■ 7 ■ ' •• ■ : 

; ■ . . ? . . / ■ • 

...., . * < x- - ■ * ■ - 1 ■ »f - > -v 

• 4 • ' •• * • 1 ’• .. . ‘ ’ ' ’ • ’ . 

. , • • *. ' 

■ ' r.C ' ■ .. ... i? ■ ■ : 1 ■ ■ . 7 • . . • . ; ■ . / :'v- 

.. himmt;, .. u. 





